using Microsoft.Data.Sqlite;
using ZB.MOM.WW.Auth.Abstractions.ApiKeys;
using ZB.MOM.WW.Auth.ApiKeys.Sqlite;

namespace ZB.MOM.WW.Auth.ApiKeys.SqlServer.Tests.Live;

/// <summary>
/// Auth-008 (scadaproj#46), the live half: key ids match exactly, as they do in the SQLite store
/// this one ports. The <c>key_id</c> column uses the database's default collation — case-insensitive
/// on a stock SQL Server — so <c>LINE1</c> found the row stored as <c>line1</c>, and the importer
/// counted a SQLite <c>Line1</c> beside <c>line1</c> as an ordinary "skipped" duplicate.
/// </summary>
[Collection("live-sqlserver")]
public sealed class KeyIdFidelityLiveTests : IAsyncLifetime
{
    private readonly string _schema = LiveSqlServer.NewSchemaName();
    private readonly string _sqlitePath =
        Path.Combine(Path.GetTempPath(), $"zbauth-keyid-{Guid.NewGuid():N}.db");

    private AuthSqlServerConnectionFactory _factory = null!;

    public async Task InitializeAsync()
    {
        if (!LiveSqlServer.IsEnabled)
            return;

        _factory = new AuthSqlServerConnectionFactory(LiveSqlServer.OptionsFor(_schema));
        await new SqlServerApiKeyStoreMigrator(_factory).MigrateAsync(CancellationToken.None);
    }

    public async Task DisposeAsync()
    {
        SqliteConnection.ClearAllPools();
        foreach (string path in new[] { _sqlitePath, _sqlitePath + "-wal", _sqlitePath + "-shm" })
        {
            if (File.Exists(path))
                File.Delete(path);
        }

        await LiveSqlServer.DropSchemaAsync(_schema);
    }

    private static ApiKeyRecord Record(string keyId) => new(
        KeyId: keyId,
        KeyPrefix: "sbk",
        SecretHash: [1, 2, 3, 4],
        DisplayName: "Key " + keyId,
        Scopes: new HashSet<string>(["read"], StringComparer.Ordinal),
        ConstraintsJson: null,
        CreatedUtc: new DateTimeOffset(2026, 5, 1, 8, 30, 0, TimeSpan.Zero),
        LastUsedUtc: null,
        RevokedUtc: null);

    [SkippableFact]
    public async Task Lookups_AreCaseSensitive_LikeTheSqliteStore()
    {
        Skip.IfNot(LiveSqlServer.IsEnabled, LiveSqlServer.SkipReason);

        var admin = new SqlServerApiKeyAdminStore(_factory);
        var read = new SqlServerApiKeyStore(_factory);
        await admin.CreateAsync(Record("line1"), CancellationToken.None);

        Assert.NotNull(await read.FindByKeyIdAsync("line1", CancellationToken.None));
        Assert.Null(await read.FindByKeyIdAsync("LINE1", CancellationToken.None));
        Assert.Null(await read.FindActiveByKeyIdAsync("Line1", CancellationToken.None));
        // Trailing spaces are significant too (SQL Server's '=' pads them away).
        Assert.Null(await read.FindByKeyIdAsync("line1 ", CancellationToken.None));
        Assert.False(await admin.RevokeAsync("LINE1", DateTimeOffset.UtcNow, CancellationToken.None));
        Assert.Null((await read.FindByKeyIdAsync("line1", CancellationToken.None))!.RevokedUtc);
    }

    [SkippableFact]
    public async Task Import_CaseVariantKeyIds_AreReportedAsCollisions_NotSkipped()
    {
        Skip.IfNot(LiveSqlServer.IsEnabled, LiveSqlServer.SkipReason);

        var sqliteFactory = new AuthSqliteConnectionFactory(_sqlitePath);
        await new SqliteAuthStoreMigrator(sqliteFactory).MigrateAsync(CancellationToken.None);
        var sqliteAdmin = new SqliteApiKeyAdminStore(sqliteFactory);
        await sqliteAdmin.CreateAsync(Record("line1"), CancellationToken.None);
        await sqliteAdmin.CreateAsync(Record("Line1"), CancellationToken.None);

        ApiKeyImportResult result = await new SqliteApiKeyStoreImporter(_factory).ImportAsync(_sqlitePath, CancellationToken.None);

        Assert.Equal(1, result.KeysInserted);
        Assert.Equal(0, result.KeysSkipped);
        Assert.Single(result.KeyIdCollisions);

        // Re-running: the inserted one is now an ordinary skip, the other still a collision.
        ApiKeyImportResult again = await new SqliteApiKeyStoreImporter(_factory).ImportAsync(_sqlitePath, CancellationToken.None);
        Assert.Equal(0, again.KeysInserted);
        Assert.Equal(1, again.KeysSkipped);
        Assert.Single(again.KeyIdCollisions);
    }

    [SkippableFact]
    public async Task Import_OverLengthKey_IsRejected_NotTruncated()
    {
        Skip.IfNot(LiveSqlServer.IsEnabled, LiveSqlServer.SkipReason);

        string longId = new('k', 70);
        var sqliteFactory = new AuthSqliteConnectionFactory(_sqlitePath);
        await new SqliteAuthStoreMigrator(sqliteFactory).MigrateAsync(CancellationToken.None);
        var sqliteAdmin = new SqliteApiKeyAdminStore(sqliteFactory);
        await sqliteAdmin.CreateAsync(Record(longId), CancellationToken.None);
        await sqliteAdmin.CreateAsync(Record("ok-key"), CancellationToken.None);

        ApiKeyImportResult result = await new SqliteApiKeyStoreImporter(_factory).ImportAsync(_sqlitePath, CancellationToken.None);

        Assert.Equal(1, result.KeysInserted);
        Assert.Equal(longId, Assert.Single(result.KeysRejected));
        Assert.Equal(1L, Convert.ToInt64(await LiveSqlServer.ScalarAsync($"SELECT COUNT(*) FROM [{_schema}].[api_keys]")));
    }
}